Merge remote-tracking branch 'ansgar/pu/multiarchive-1'

* ansgar/pu/multiarchive-1:
  daklib/archive.py: don't check hashes when copying upload to temporary location
  dak/clean_suites.py: use '>' instead of '>='
  daklib/utils.py (gpg_get_key_addresses): prefer @debian.org addresses
  dak/process_upload.py: remove old inactive code; update some comments
  dak/dakdb/update79.py: fix typo: workd → world

Signed-off-by: Joerg Jaspert <joerg@debian.org>